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The goal of project is to design a processing equipment containing ammonia tail gas, enables the ammonia to recycle effluent not cause air pollution, increase the utilization rate of ammonia to reduce costs and reduce energy consumption. The main source of ammonia are sodium, potassium apparatus evaporation after the double de-composition reaction of ammonia into ammonia, and unorganized emissions as well. From the source, according to the consumption of raw materials, ammonium ions of circular consumption and exhaust emissions and so on, carries on the material balance, equipment selection, in order to adjust the process steps, to design a more reasonable ammonia circulation scheme of environmental protection. Through the process design, to large-scale production.
With the fast development the chemical industries, chemical products can be seen everywhere, life seems to be inseparable from the chemical products, and therefore chemical process design task is increasingly heavier. First of all, in the chemical production, through the use of chemical knowledge and methods of the design, we can realize the reconstruction and expansion of chemical plant, for unit operation equipment, or the entire unit production capacity test and technical and economic indicators to asses, evaluate the process, find the weak link and unreasonable phenomenon and mining production potential, etc. Secondly, from the laboratory research and development to the pilot and finally into commercial operation, can not be separated from the design. To make scientific research achievements into productive forces, also is the realization of industrialization, must combine the scientific research and design of new processes, new products and new equipment development work. So if you want to build a set of good quality, low consumption, high yield of chemical equipment, important prerequisite is to have a high quality, high level design. Improving the design quality and speed of the development of infrastructure construction plays a key role in promoting.
1.The source of task:
This design is according to the Tiantan Auxiliaries co, LTD. Shanghai per-sulfate project engineering and ammonia balance process design. Its purpose is to apply what they have learned knowledge of chemical equipment related to production design, a simulation and industrial production, the production equipment for sulfate design to provide the reference. As the simulation design, such as equipment piping layout, explosion-proof electrical design, noise control, emergency fire and factory overall arrangement, etc.
2.The standards of the design:
This design reference to the following standards and regulation of the state.
A. Dangerous and harmful factors classification and code in the production process.(GB/T13816-1992)
B. Commonly used the classification of dangerous chemical standards.(GB13690-1992)
C. Factory fire prevention regulations.(GBJ16-1987)
D. Integrated waste water emissions regulations.(GBJ8978)
E. Steel pressure level.(GB150)
F. Process equipment layout design.(HG20570)
G. Chemical plant piping design rules.(HG/T20549)
H. Typical damage and chemical medium in the pressure vessel explosion dangerous degree classification.(HGJ43-1991)
I. Chemical construction project environmental protection design rules.（HG20667-2005）
3.The design principle and main design index
Principles: (1).Security: a large amount of material in chemical production is inflammable, explosive or toxic. Therefore, the design must fully consider various obvious and potential risk factors, to ensure the personal safety and life safety of production personnel.
(2). Easy to operate, in each production process and equipment at the same time, to determine reasonable operating conditions were determined. Because it is in the establishment of the production process and equipment and its role play and the scheme of control has a direct relationship.
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